Washington DC requires Department of Buildings (DOB) permits for built-in outdoor kitchens that involve gas line installation, electrical work, plumbing, or permanent structures. The applicable codes are the DC Construction Codes (DCMR 12) and the DC Fuel Gas Code. In any of DC's 65+ historic districts (Georgetown, Capitol Hill, Logan Circle, Mount Vernon Square, etc.), the Historic Preservation Review Board (HPRB) must approve the design before DOB issues a permit.
DC outdoor kitchens are subject to the DC Construction Codes (12 DCMR), which adopt the 2017 International Building, Plumbing, Mechanical, and Fuel Gas Codes with District amendments. Permits typically needed: (1) building permit for permanent masonry or concrete structures, weight-bearing pergolas, and roofs; (2) plumbing/gas permit for fixed natural-gas lines (Washington Gas inspection required for final connection) or for permanent water supply and drainage; (3) electrical permit for new circuits, including the GFCI requirements within 6 feet of any sink or water feature; (4) mechanical permit if ventilation hoods or fixed exhaust systems are installed. Zoning setbacks under DC Zoning Subtitle E (rowhouse zones) and Subtitle D (one-family zones) apply: typically a 3 to 5 foot setback from side and rear lot lines for accessory structures, with height limits of 12 to 15 feet. In any of DC's roughly 65 historic districts and at any individually landmarked property, the Historic Preservation Review Board must review and approve exterior alterations including outdoor kitchens visible from a public street. HPRB review can add 60 to 90 days. Drop-in BBQ carts without fixed utilities or anchored structures generally do not require permits.
Unpermitted construction: stop-work order, after-the-fact permit fees (often triple normal), required removal or modification. HPRB violation in historic district: required restoration, civil penalties up to $5,000 per day under historic preservation law.
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